191240136 has 32 divisors (see below), whose sum is σ = 531223200. Its totient is φ = 63746640.

The previous prime is 191240099. The next prime is 191240143. The reversal of 191240136 is 631042191.

191240136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442470 + ... + 442901.

It is an arithmetic number, because the mean of its divisors is an integer number (16600725).

Almost surely, 2^191240136 is an apocalyptic number.

It is an amenable number.

191240136 is an abundant number, since it is smaller than the sum of its proper divisors (339983064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191240136 is a wasteful number, since it uses less digits than its factorization.

191240136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885386 (or 885376 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 191240136 is about 13828.9600476681. The cubic root of 191240136 is about 576.1377708640.

The spelling of 191240136 in words is "one hundred ninety-one million, two hundred forty thousand, one hundred thirty-six".